I don’t know of any that have a specific stand-alone harness. Not specifically for a Bronco at least. American Autowire does include an interior light setup with their Bronco-specific harness though. Maybe it's a good start.
Link to our AAW kit:
https://www.wildhorses4x4.com/early-bronco-american-autowire-wiring-harness
Are you looking for just the lighting, or are you doing an entire harness replacement?
If you mean, as part of a full chassis harness replacement, there are probably enough dedicated power circuits to power in just about any harness to power one up.
But for those you’d still need to DIY all the wires and routing. As mentioned.
Looking back, seems to me that EZ Wire used to have a courtesy light circuit built into their harness.
Like many though, it was a very generic harness. Nothing wrong with the quality, but not the best fit overall for a bronco.
But if it did have an already dedicated lighting circuit, others might as well.
Back to the AAW Bronco harness though, lots of members here have installed them in the last couple of years. Maybe they can comment on just how complete the interior lighting part of the kit is. And whether or not they utilized it.
Is that what you were asking?
Paul